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having non-return valves against return of waste water (E03C1/286 takes precedence)

having non-return valves against return of waste water (E03C1/286 takes precedence) · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

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Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	E03C1/288
Official title	having non-return valves against return of waste water (E03C1/286 takes precedence)
Display label	having non-return valves against return of waste water (E03C1/286 takes precedence)
Total patents	9

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.